CH145020 | Interest: late payment interest: special provisions: effect of interest on reliefs for income tax or capital gains tax: overview
From HM Revenue & Customs · Compliance Handbook
You must check whether, and from which date, the FA 2009 interest rules apply to the tax or duty you are dealing with. See CH140160 for full details.
We will adjust the amount of late payment interest payable where certain conditions are met and, if necessary, such sums will be repaid.
The adjustments occur when there is
We adjust the late payment interest so that the total of late payment interest is the same as it would have been if the tax discharged or repaid had never been charged.
FA09/S101
FA09/SCH53